Vol. numbering changes semiannually, while numerical designation begins with no. 1
Vols. 26-45, 1936-1945. 1 v
Society of Motion Picture Engineers
Evidence reported by ian frederick-rothwell for item journalofsociety36socirich on Aug 15, 2007; visible notice of copyright and date; stated date is 1941; not published by the US government; Have not checked for notice of renewal in the Copyright renewal records.